Starting device for toy engines



1958 J. w. MCROSKEY ET AL 2,

STARTING DEVICE. FOR TOY ENGINES Filed June 24, 1957 2 Sheets-Sheet 1JOHN M M: ROSKE I, LEONARD H. Ale/7051(5),

IN VEN TORS.

Oct. 7, 1958 J. w. MCROSKEY ET AL 2,855,070

STARTING DEVICE FOR TOY ENGINES Filed June 24. 1957 2 Sheets-Sheet 2JOHN nz Illa/7051(5); LEONARD hf mnosxn;

IN V EN TORS fl/forney United States Patent Ofiice 2,855,070 PatentedOct. 7, 1958 STARTING DEVICE non rov ENGINES John W. McRoskey, West LosAngcles, and Leonard H. McRoskey, Los Angeles, Caiil'l, assignors toRepublic Tool & Die Corporation, Los Angeles, Calif., a corporation ofCalifornia Application June 24, 1957, Serial No. 667,357

14 Claims. (Cl. l8537) This invention relates to starting devices forstarting toy engines of low mass and high revolutions per minuteoperation, which engines are employed to drive a toy, such as, forexample, a toy engine driven airplane. wherein the engine is ordinarilystarted by spinning the propeller or by the use of the recoil typestarter.

The present invention avoids ditficulties and danger to fingersencountered in the use of the old method of starting toy engines byflipping the propeller forwardly by application of a finger thereto andhas for an object the provision of a starting device which is simplerand less expensive than the recoil type of toy engine starter which hasa one-way clutch and a pull cord which is pulled outwardly to effect anumber of starting revolutions of the engine crankshaft.

To effectively start a toy engine by use of the propeller flippingtechnique requires exercise of skill by the operator because of therapidity with which the starting force must be applied to the propellerin order to attain a suitable compression in the engine cylinder. it isan object of the invention to provide a simple and effective startingdevice which requires no skill on the part of the operator and whichgives an effective and consistent starting action each time the deviceis employed.

It is an object of the invention to provide a starting device wherein anefficient starting action is accomplished without the necessity of theoperator applying forward force to the impeller in a quick,instantaneous manner as required in the old practice of flipping thepropeller by use of a finger, or by pulling out the cord of a startingdevice so as to effect the forward rotation of the engine shaft as thepull cord is pulled outwardly. In the present device, the energy forrotating the engine shaft forwardly is accumulated and stored in aspring, and when this energy is released, a very quick or instantaneousand consistent rotation of the engine shaft in forward direction isobtained so that the piston moves very rapidly through severalcompression strokes.

It is an object of the invention to provide a starting device for a toyengine provided with a clutch having a rotatable part surrounding theengine shaft and having means for effecting engagement of the rotatablepart with the shaft when the part is rotated forwardly and when theshaft is rotated in reverse direction, there being spring meansconnected to the rotatable part and to a stationary member so that whenthe shaft is rotated in reverse direction the spring will be wound andenergy stored therein, the spring, when the shaft is released, rotatingthe rotatable part forwardly and expending its energy in rotating theshaft in forward direction to start the engine. In the use of thedevice, the operator manually rotates the propeller rearwardly at anydesired speed. This rearward rotation of the shaft causes engagement ofthe oneway clutch so that the rotatable part of the clutch will berotated in reverse direction and the spring wound. Then, the operatorquickly releases the propeller so that the force of the spring mayrotate the shaft in forward, enginestarting direction. In the use of theinvention, the

operator is not required to quickly or instantaneously apply a force. Hemay revolve the propeller slowly in reverse direction, but when hereleases his hand from engagement with the propeller, the force of thespring very rapidly rotates the shaft through a number of revo lutions,to give an optimum engine-starting effect without the exercise of skillor undue effort on the part of the operator. The starting effectdelivered by the device is consistent because the forwardengine-starting rotation of the shaft is effected by the spring. Also,the danger of reverse rotation, or kickback, of the engine crankshaft ispractically avoided because of the manner in which the starter, uponrelease of the propeller, rapidly rotates the crankshaft in forwarddirection through several compression cycles.

Further objects and advantages of the invention may be brought out inthe following part of the specification wherein details of constructionhave been explained for the purpose of providing a complete disclosure,without intending, however, to limit the scope of the invention which isdefined by the appended claims.

Referring to the accompanying drawings which are for illustrativepurposes only:

Fig. 1 is a perspective view of a toy engine driven airplane equippedwith the starting device;

Fig. 2 is an enlarged fragmentary sectional view showing the manner inwhich the starter is mounted in a position surrounding the forwardlyprojecting portion of the engine crankshaft;

Fig. 3 is a sectional view taken as indicated by the line 3-3 of Fig. 2;

Fig. 4 is a sectional view taken as indicated by the line 4 4 of Fig. 2;

5 is a perspective view of the friction element of the device;

Fig. 6 is a partly sectioned view showing an alternative form of theinvention; and

Fig. 7 is a cross-section taken substantially as indicated by the line7-7 in Fig. 6.

The toy airplane 10, shown in Fig. 1, has mounted near the forward endof its fuselage a toy engine 11 adapted to drive a propeller 12. Thistoy engine is of the type which has moving parts of low mass and beingcapable of extremely high speed of rotation. In Fig. 2 the front endwall 13 of the engine crankcase is shown with a tubular extensionprojecting from the front engine wall 16 and with the front portion ofthe crankshaft 14 projecting therefrom.

The projecting portion of the shaft 14 is stepped so as to provide arelatively large cylindrical portion 14a, a splined cylindrical portion17 projecting forwardly from the portion 14a and a stem 18 projectingforwardly from the splined portion 17. The forward end of the stem 18 isprovided with threads 19 to receive a nut 20.

The starting device 21 surrounds the shaft 14 and the tubular extension15 and includes a rotatable part 22 comprising a sleeve 23 surroundingthe cylindrical part 14a of the shaft 14 and being rotatable on thesleeve 15, a clutch plate 24, a friction element 24a, clutch discs 28, adrive member 30, and a disc 25. The sleeve 22 has a non circular endportion 26 to receive the parts 24 and 25, and these parts 24 and 25, asshown in Fig. 3 have therein openings 27 corresponding to the externalshape of the end portion 26 of the sleeve 23 so that the sleeve 23 andthe parts 25 and 26 will rotate in unison. Means are provided forautomatically effecting driving engagement of the rotatable part 22 withthe shaft 14 when the shaft 14 is rotated in reverse direction and whenthe rotatable part 22 is rotated in forward direction. This means is inthe form of the oneway clutch which includes small clutch discs 28disposed in notches 29 in the clutch plate 24, and the one-way Fig.

clutch means further includes the circular drive member which is fixedon the splined portion 17 of the shaft and has an annular wall 31projecting from its periphery so as to surround the clutch plate 24 andthe clutch discs 28. The friction element 24a consist of a thincentrally perforated metal disc having diametrically opposed ridges rformed by deforming the thin metal wall of the disc 24a toward theclutch disc 28. The friction element 24a has a small projection lengaging the drive member 30 so that the friction v rotates with thedrive member 30 and ti p lEll Us r frictionally engage the clutch discs28 and move them rcarwardly with relation to the clutch paltc 24 so thatthe discs 28 will be jammed between the cam edges 46 of the clutch plate24 and the annular wall 31 of t.) i member 30.

A resilient member comprising coiled spr ng one end 33 connected to thesleeve 23 of the trial lr e part .22 and the other end 34 thereofconnected to a sh:- tionary member 35 comprising a cup-shaped housiir':having an end wall 36 which rests against the 16 of the engine housing,and a peripheral cylindri ll wall 37 which surrounds the spring 32 andthe disc 25. The housing 35 is prevented from rotation by engagementwith a pin-like lug 38 which projects from the engineheusing into anopening 39 in the end wall 36. The drive member 30 has a hub 40 which isfixed on the splincd portion 17 and which projects into the forward endof the sleeve 23. The outer, rightward face of the drive member 30 hasserrations 41. for making a good driving engagement with the hub 42 ofthe propeller 12 when the propeller hub is clamped thcrcagainst by thenut 20. The nut 20 also has the function of holding the complete starterassembly in place on the tubular extension 15 which projects for thecrankcase end wall 13.

The forward direction of rotation of the propeller l2 and of the engineshaft 14 is counterclockwise as viewed from a position forwardly of thepropeller. The drive member 30 rotates with the crankshaft 14 and,therefore, when the crankshaft 14 is rotating forwardly, as indicated bythe arrow 44- of Fig. 3, the clutch discs 28 will rest against the endWalls 45 of the clutch plate notches 29. Therefore, at this time thereis no driving engagement between the shaft 14 and the rotatable part 22.and the shaft 14 is rotated freely by the engine to operate thepropeller 12 in forward direction.

Should the propeller 12 and the shaft 14 be rotated reversely, or inclockwise direction, the clutch discs 28 will be carried in clockwisedirection by the ridges; r or the friction means 241: from the positionsin which they are shown in Fig, 3 whereupon they will be moved outwardlyby the cam edges 46 of the clutch plate 24 into tight engagement withthe annular wall 31 of the drive member 30, effecting a clutchingengagement between the parts 24 and 31 so that the clockwise rotation ofthe propeller 12 will be transmitted to the clutch plate 24 which is apart of the rotatable part 22. As shown in Fig. 4, the spring 32 iscoiled in such direction that clockwise rotation of its inner end 33,indicated by an arrow 43. will wind the spring 32.

When starting of the engine 11 is desired, the operator, after primingthe engine and making the proper electrical connections therewith,rotates the propeller 12 in reverse (clockwise) direction. The one-wayclutch means described in the foregoing makes driving engagement betweenthe drive member 30 and the rotatable part 22, so that the rotatablepart will be revolved in reverse direction, as indicated by the arrow 43of Fig. 4, thereby deforming or winding the spring 32 and storing energytherein. The operator then quickly moves his hand away from thepropeller 12, releasing the same so that the force of the spring 32 willrotate the rotatable member 22 in counterclockwise direction, thiscounterclockwise rotation being transmitted through the one-way clutchmeans to the engine shaft to revolve the same forwardly through severalrevolutions. The action of the spring, when the propeller 12 isreleased, as described in the foregoing. is to rotate the shaft M atsuch relatively high velocity that the piston of the engine 11 will becarried rapidly through a number of compression cycles. When the spring32 has unwound after discharging its energy, the rotatable part 22 willbe held stationary while the shaft 14 and its supported parts are freeto continue their forward, counterclockwise, rotation owing to therelease of the one-way clutch means which consists of the movement ofthe clutch discs 28 in counterclockwise direction into engagement withthe end walls 45 of the notches 29.

in the form of the invention disclosed in Figs. 6 and i, there is anengine having a crankshaft 56 which has a propeller 57 fixed on theprojecting end thereof. '1 he device has a separate shaft 58 which isconnected to the crank mechanism of the engine shown as a crankshaft 56so as to rotate in unison therewith. This shaft 58 projects into thecrankcase 59 of the engine and has a disc 60 supported on its inner end.The disc 60 has therein an eccentric opening 61 to receive the crankpin62 which is connected to the crankshaft 56. A starter 63 disposed in aposition surrounding a portion of the shaft 58 adjacent the rear face ofthe crankcase 59. This starter 63 has a sleeve 64 which is rotatablearound the axis of the shaft 58 and is connected to one end of a spring65 which has its other end connected to a cup- :jhaped housing 66. Thespring 65 is oriented so that when the sleeve 64 is rotated in reversedirection, the spring will be wound, and unwinding of the spring 65 willrotate the sleeve 64- in forward or counterclockwise direction.

A drive member 67 is fixed on the shaft 58 in a posi tion adjacent thehousing 66 and is provided with a cavity 68 faced toward the housing 66.in this cavity 68 there is a clutch plate 69 of noncircular form, havingan opening 76 which receives an end portion of the sleeve 64. The clutchplate 69 has internal clutch notches 71 communicating with the opening70 and having therein clutch discs 72 adapted to be moved by the camedges 73 of the notches 71 into clutching engagement with the outersurface of the sleeve 64, when reverse rotation of the shaft 64 actsthrough the drive member 67 to rotate the clutch plate 69 in rearwarddirection.

The notches 71 have end walls 74 which extend radially and which engagethe clutch discs 72 when the shaft 64 and the clutch plate 69 arerotated in forward direction, the clutch plate 69 and the clutch disc 72then revolving freely around the sleeve 64. The cam edges 73 extendspirally from the outer ends of the end walls 74 of the notches 71toward the external surface of the sleeve 64.

The starting of the engine shown in Fig. 6 is accomplished in thefollowing manner. The operator applies reverse rotation to the propeller57. This reverse rotation is transmitted through the crankshaft 56 tothe shaft 58 which will then rotate the clutch plate 69 in reversedirection, indicated by the arrow 75 of Fig. 7, moving the cam edges 73in such direction that they will force the cam discs 72 into frictionalengagement with the outer surface of the sleeve 64, to drive the sleeve64 in reverse direction so that the spring 65 will be wound. Then, whenthe operator releases the propeller 57, the spring will unwind androtate the shaft 58 in forward direction. Through its connection withthe crankpin 62, the forwardly rotating shaft 58 will drive thecrankshaft 56 rapidly forwardly to produce a number of compressioncycles due to the resulting movement of the engine piston within itscylinder.

We claim:

1. In a starting device for a toy engine characterized by having movingparts of low mass and high revolutions per minute, said engine having apower delivery crankshaft rotatable in forward and rearward directions:a

rotatable part surrounding said shaft; one-way clutch means forconnecting said shaft and said part when said shaft is rotated inrearward direction and when said part is rotated in forward direction;and a spring having one end connected to said rotatable part and itsother end connected to a stationary member so that said spring will bewound when said part is rotated in rearward direction by rearwardrotation of said shaft transmitted through said one-way clutch means tosaid part from said shaft, said spring, upon release of said shaft,applying its energy through said rotatable part and said one-way clutchmeans to rotate said shaft in forward, enginestarting direction.

2. In a starting device for a toy engine characterized by having movingparts of low mass and high revolutions per minute, said engine having apower delivery crankshaft rotatable in forward and rearward directions:a rotatable part surrounding said shaft; one-way clutch means forconnecting said shaft and said part when said shaft is rotated inrearward direction and when said part is rotated in forward direction;and a coil spring having one end connected to said rotatable part andits other end connected to a stationary portion of the engine so thatsaid spring will be wound when said part is rotated in rearwarddirection by rearward rotation of said shaft transmitted through saidone-way clutch means to said part from said shaft, said spring, uponrelease of said shaft, applying its energy through said rotatable partand said one-way clutch means to rotate said shaft in forward,engine-starting direction.

3. In a starting device for a toy engine characterized by having movingparts of low mass and high revolutions per minute, said engine having apower delivery crankshaft rotatable in forward and rearward directions:a rotatable part surrounding said shaft; a drive member fixed on saidshaft adjacent said rotatable part; one-way clutch means for connectingsaid drive member and said part when said shaft is rotated in rearwarddirection and when said part is rotated in forward direction; and aspring having one end connected to said rotatable part and its other endconnected to a stationary member so that said spring will be wound whensaid part is rotated in rearward direction by rearward rotation of saidshaft transmitted through said one-way clutch means to said part fromsaid shaft, said spring, upon release of said shaft, applying its energythrough said rotatable part, said one-way clutch means and said drivemember to rotate said shaft in forward, engine-starting direction.

4. In a starting device for a toy engine having a power deliverycrankshaft rotatable in forward and rearward directions: a rotatablepart surrounding said shaft; a drive member fixed on said shaft adjacentsaid rotatable part; one-way clutch means for connecting said drivemember and said part when said shaft is rotated in rearward directionand when said part is rotated in forward direction; and a coil springhaving one end connected to said rotatable part and its other endconnected to a stationary portion of the engine so that said spring willbe wound when said part is rotated in rearward direction by rearwardrotation of said shaft transmitted through said one-way clutch means tosaid part from said shaft, said spring, upon release of said shaft,applying its energy through said rotatable part, said one-way clutchmeans and said drive member to rotate said shaft in forward,engine-starting direction.

5. In a starting device for a toy engine having a power deliverycrankshaft rotatable in forward and rearward directions: a sleeverotatable around said crankshaft adjac it said crankcase; a drive memberfixed on said shaft adjacent the outer end of said sleeve; one-wayclutch means for connecting said sleeve to said drive member when saidshaft is rotated in reverse direction and when said sleeve is rotated inforward direction; and a spring having one end connected to said sleevebetween said onewvay clutch means and said crankcase, and having theother end thereof connected to said crankcase, said spring being placedso that it will be wound by reverse rotation of said sleeve in responseto rotation of said shaft in reverse direction, said spring, uponrelease of said shaft, applying its energy through said sleeve, saidone-way clutch means and said drive member to said shaft to rotate thesame in forward, engine-starting direction.

6. In a starting device for a toy engine having a power deliverycrankshaft rotatable in forward and rearward directions projecting fromits crankcase: a sleeve rotatable around said crankshaft adjacent saidcrankcase; a drive member fixed on said shaft adjacent an end of saidsleeve; a clutch plate on said sleeve adjacent the outer end thereof andin spaced relation to said drive member; one-way clutch means betweensaid clutch plate and said drive member for connecting said sleeve tosaid drive member when said shaft is rotated in reverse direction andwhen said sleeve is rotated in forward direction; and a spring betweensaid clutch plate and said crankcase having one end connected to saidsleeve between said oneway clutch means and said crankcase, and havingthe other end thereof connected to said crankcase, said spring beingplaced so that it will be wound by reverse rotation of said sleeve inresponse to rotation of said shaft in reverse direction, said spring,upon release of said shaft, applying its energy through said sleeve,said one-way clutch means and said drive member to said shaft to rotatethe same in forward, engine-starting direction.

7. In a starting device for a toy engine having a shaft projecting fromits crankcase, said shaft being connected to the crank mechanism of theengine; a sleeve rotatable around said shaft adjacent said crank-case; adrive member fixed on said shaft adjacent an end of said sleeve; aclutch plate connected to said drive member and surrounding a portion ofsaid sleeve; one-way clutch means between said clutch plate and saiddrive member for connecting said sleeve to said drive member when saidshaft is rotated in reverse direction and when said sleeve is rotated inforward direction, said one-way clutch means comprising a clutch discdisposed between said clutch plate and said sleeve; and a spring betweensaid clutch plate and said crankcase having one end connected to saidsleeve between said one-way clutch means and said crankcase, and havingthe other end thereof connected to said crankcase, said spring beingplaced so that it will be wound by reverse rotation of said sleeve inresponse to rotation of said shaft in reverse direction, said spring,upon release of said shaft, applying its energy through, said sleeve,said one-way clutch means and said drive member to said shaft to rotatethe same in forward, engine-starting direction.

8. In a starting device for a toy engine having a shaft connected withthe crank mechanism of the engine: a sleeve rotatable around said shaft;a drive member fixed on said shaft adjacent an end of said sleeve; aclutch plate on said sleeve adjacent an end of said sleeve, said clutchplate having external notches therein; clutch discs in said notches fordriving engagement with said drive member when said drive member isrotated in rearward direction; and a spring having one end connected tosaid sleeve and the other end thereof connected to a stationary part ofsaid engine, said spring being positioned so that it will be wound whensaid sleeve is rotated in reverse direction by reverse rotation of saidshaft, said spring, upon release of said shaft, applying its energythrough said sleeve, said clutch plate and said drive member to saidshaft to rotate the same in forward, engine-starting direction.

9. In a starting device for a toy engine having a shaft connected withits crank mechanism: a sleeve rotatable around said shaft; a drivemember adjacent an end of said sleeve; a clutch plate connected to saiddrive member; clutch disc means arranged between said sleeve and saidclutch plate for connecting said drive member and said sleeve forrotation when said drive member is rotated in reverse direction; and aspring connected to said sleeve so as to be wound when said sleeve isrotated in reverse direction, said sleeve, when said shaft is released,applying its energy through said sleeve, said clutch disc means and saidclutch plate, to drive said shaft in forward, enginestarting direction.

10. In a starting device for a toy engine having a shaft connected withits crank mechanism: a sleeve rotatable around said shaft; a drivemember adjacent an end of said sleeve, said drive member having a recesstherein faced toward said sleeve; a drive plate in said recess, saiddrive plate having an opening to receive the adjacent end of saidsleeve; clutch disc means arranged between said sleeve and said clutchplate for connecting said drive member and said sleeve for rotation whensaid drive member is rotated in reverse direction; and a springconnected to said sleeve so as to be wound when said sleeve is rotatedin reverse direction, said sleeve, when said shaft is released, applyingits energy through said sleeve, said clutch disc means and said clutchplate, to drive said shaft in forward, engine-starting direction.

11. In a starting device for a toy engine having a shaft connected withthe crank mechanism of the engine: a sleeve rotatable around said shaft;a drive member fixed on said shaft adjacent an end of said sleeve; aclutch plate on said sleeve adjacent an end of said sleeve, said clutchplate having external notches therein; clutch discs in said notches fordriving engagement with said drive member when said drive member isrotated in rearward direction; friction means rotating with said shaftfor moving said clutch discs in said notches and effecting drivingengagement between said drive member and said clutch plate when saiddrive member is rotated in said rearward direction; and a spring havingone end connected to said sleeve and the other end thereof connected toa stationary part of said engine, said spring being positioned so thatit will be wound when said sleeve is rotated in reverse direction byreverse rotation of said shaft, said spring, upon release of said shaft,applying its energy through said sleeve, said clutch plate and saiddrive member to said shaft to rotate the same in forward,engine-starting direction.

12. in a starting device for a toy engine characterized by having movingparts of low mass and high revolutions per minute, said engine having apower delivery crank shaft rotatable in forward and rearward directions:a rotatable part surrounding said shaft; one-way clutch means forconnecting said shaft and said part when said shaft is rotated inrearward direction and when said part is rotated in forward direction;and a resilient member having one end connected to said rotatable partand its other end connected to a stationary member so that saidresilient member will be deformed and energy stored therein when saidpart is rotated in rearward direction by rearward rotation of said shafttransmitted through said one-way clutch means to said part from saidshaft, said resilient member, upon release of said shaft, applying itsenergy through said rotatable part and said one-way clutch means torotate said shaft in forward, engine-starting di rcction.

13. In a starting device for a toy engine having a shaft connected withits crank mechanism: a sleeve rotatable around said shaft; a drivemember adjacent an end of said sleeve, said drive member having a recesstherein faced toward said sleeve; a drive plate in said recess, saiddrive plate having an opening to receive the adjacent end of saidsleeve; clutch disc means arranged between til (l sleeve and said clutchplate for connecting said drive itncmher and said sleeve for rotationwhen said drive member is rotated in reverse direction; and a resilientmember connected to said sleeve so as to be deformed when said sleeve isrotated in reverse direction, said reilient member, when said shaft isreleased, applying its energy through said sleeve, said clutch discmeans and said clutch plate, to drive said shaft in forward,enginestarting direction.

M. in a starting device for a toy engine having a shaft connected withthe crank mechanism of the engine: a sleeve rotatable around said shaft;a drive member fixed on said shaft adjacent an end of said sleeve; aclutch plate on said sleeve adjacent an end of said sleeve, said rlutchplate having external notches therein; clutch discs in said notches fordriving engagement with said drive member when said drive member isrotated in rearward direction; friction means rotating with said shaftfor moving said clutch discs in said notches and effecting drivingengagement between said drive member and said clutch plate when saiddrive member is rotated in said rearward direction; and a resilientmember having one end connected to said sleeve and the other end thereofconnected to a stationary part of. said engine, said resilient memberbeing positioned so that it will be deformed when said sleeve is rotatedin reverse direction by reverse rotation of said shaft, said resilientmember, upon release of said shaft, applying its energy through saidsleeve, said clutch plate and said drive member to said shaft to rotatethe same in forward, engine-starting direction.

Erbe Feb. 24, 1920 Lansing Nov. 21, 1933 UNITED STATES PATENT OFFICECERTIFICATE OF CORRECTION Patent No, 2; 855,07O October 7 1958 John W,McRoskey et aln It is hereby certified that error appears in the printedspecification of the above numbered patent requiring correction and thatthe said Letters Patent should read as corrected below.

Column 3, line 13, for "palte" read plate column '7, lines 1 and 16, for"sleeve", each occurrence, read spring Signed and sealed this 10th dayof February 1959.,

SEAL) Attest:

KARL H. AXLINE ROBERT C. WATSON Attesting Officer Commissioner ofPatents UNITED STATES PATENT OFFICE Certificate Patent No. 2,855,070Patented October 7, 1958 John W. MeRoskey and Leonard H. McRoskeyApplication having been made bg John W. McRoske%vand Leonard H.McRoskey, the inventors named in the patent a ove identified, and EN-MACCorporation, the assignee for the issuance of a, certificate under theprovisions of Title 35, Section 256 of the States Code, deleting thename of said Leonard H. McRoskey from the patent as a. joint inventor,and a. showing and proof of facts satisfying the requirements of thesaid section havin been submitted, it is, this 14th day of June 1960,certified that the name of the said Leonard H. McRoskey is herebydeleted from the said patent as a joint inventor with the said John W.McRoskey.

ARTHUR W. OROOER, First Aaaiatcmt Oommduiamr.

